Stroboflash-free COB lamp strip

Abstract

The utility model discloses a stroboflash-free COB lamp strip which comprises a flexible circuit board and an LED chip arranged on the flexible circuit board, the flexible circuit board is further provided with a rectifier bridge, a first resistor, a capacitor, a constant-current IC and a second resistor, the front end of the LED chip is sequentially connected with the first resistor and the rectifier bridge in a conductive mode, and the rear end of the capacitor is connected with the constant-current IC in a conductive mode. The rear end of the LED chip is electrically connected with the capacitor, the constant current IC and the second resistor in sequence. Firstly, through the arrangement of the rectifier bridge, an external power supply is not needed, limitation of power of a traditional power supply is avoided, and the total length of the lamp strip can be infinitely prolonged; and then, a resistor I, a capacitor, a constant-current IC and a resistor II are also arranged, so that the high-voltage wave current becomes stable, the LED chip is not damaged, the stroboflash of light is eliminated, eyes are protected, and the stroboflash is not generated when the COB lamp strip is applied to photographing in a light environment.

Description

Technical Field

[0001] The utility model relates to the technical field of light strips, and in particular to a flicker-free COB light strip. Background Art

[0002] Since LED can only conduct in one direction and has nonlinear volt-ampere characteristics, it cannot be directly powered by 220V AC power supply. It needs to use a power supply to convert the AC power into a stable DC current. Moreover, since the pulse voltage will make the LED work in the switching state, the light emitted by the light strip will flicker; some existing light strips filter by adding filter capacitors, but the filtering effect is not good and stable DC power cannot be output. Moreover, a slight surge in the AC voltage will easily damage the light strip, reducing the service life of the light strip.

[0003] Therefore, how to better reduce the flicker of the light strip is a technical problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] The utility model aims to solve one of the problems existing in the existing related technologies to at least a certain extent. To this end, the utility model provides a COB light strip without flicker.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A flicker-free COB light strip includes a flexible circuit board and an LED chip arranged on the flexible circuit board. A rectifier bridge, a resistor 1, a capacitor, a constant current IC and a resistor 2 are also arranged on the flexible circuit board. The front end of the LED chip is conductively connected to the resistor 1 and the rectifier bridge in sequence, and the rear end of the LED chip is conductively connected to the capacitor, the constant current IC and the resistor 2 in sequence.

[0007] In some embodiments, two capacitors may be arranged in parallel.

[0008] In some embodiments, a plurality of LED chips are evenly spaced apart.

[0009] In some embodiments, fluorescent silicone is sprayed on the LED chip.

[0010] In some embodiments, the distance between two adjacent LED chips is 2.5 mm-10 mm.

[0011] In some embodiments, the flexible circuit board includes a plurality of circuit board units, a cutting line is provided between two adjacent circuit board units, and a connecting conductor capable of electrically connecting the circuit board units is provided on the cutting line.

[0012] In some embodiments, the connecting conductor includes a positive conductor and a negative conductor.

[0013] In some embodiments, a flexible adhesive layer is wrapped around the flexible circuit board, and the flexible adhesive layer is a silicone layer.

[0014] In some embodiments, the thickness of the flexible circuit board is 1 mm-2 mm.

[0015] In some embodiments, the flexible circuit board includes a first PEI film layer, a first rolled copper foil, a PET film layer, a second rolled copper foil, and a second PET film layer arranged in sequence from top to bottom.

[0016] Compared with the prior art, the utility model has at least the following beneficial effects: first, by setting a rectifier bridge, there is no need for an external power supply, and it is not limited by the power of a traditional power supply, and the total length of the light strip can be extended indefinitely; then, resistor 1, capacitor, constant current IC and resistor 2 are also provided, so that the high-voltage wave current becomes stable, the LED chip is not damaged, the light flicker is eliminated, and it is beneficial to protect the eyes. When taking pictures in the light environment where the COB light strip is used, there will be no flicker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the COB light strip of the utility model;

[0018] Figure 2 This is a partial cross-sectional structural diagram of the COB light strip of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the flexible circuit board of the utility model. DETAILED DESCRIPTION

[0020] The following examples illustrate the present invention, but the present invention is not limited by these examples. Modifications to the specific implementation of the present invention or equivalent replacement of some technical features without departing from the spirit of the present invention should be included in the scope of the technical solution claimed for protection in the present invention.

[0021] like Figure 1-Figure 3 As shown, the present embodiment provides a flicker-free COB light strip, including a flexible circuit board 1 and an LED chip 2 arranged on the flexible circuit board 1, and a rectifier bridge 3, a resistor 1 4, a capacitor 5, a constant current IC 6 and a resistor 2 7 are also arranged on the flexible circuit board 1, the front end of the LED chip 2 is conductively connected to the resistor 1 4 and the rectifier bridge 3 in sequence, and the rear end of the LED chip 2 is conductively connected to the capacitor 5, the constant current IC 6 and the resistor 2 7 in sequence.

[0022] The COB light strip of the present invention firstly adopts the setting of the rectifier bridge 3, so that no external power supply is required, and it is not limited by the power of the traditional power supply, and the total length of the light strip can be extended indefinitely; then, a resistor 1 4, a capacitor 5, a constant current IC 6 and a resistor 2 7 are also provided, so that the high-voltage wave current becomes stable, the LED chip 2 is not damaged, the light flicker is eliminated, and it is beneficial to protect the eyes. When taking pictures in the light environment where the COB light strip is used, no flicker will be generated.

[0023] In order to improve the stability and reliability of the circuit, two capacitors 5 may be provided in parallel (not shown in the drawings).

[0024] See also Figure 1-Figure 2 As shown, a plurality of LED chips 2 are evenly spaced and arranged.

[0025] Furthermore, the LED chip 2 is sprayed with fluorescent silicone 41 , and the fluorescent silicone 41 is sprayed on the LED chip 2 by means of glue pulling.

[0026] In the COB light strip of the present invention, the distance between two adjacent LED chips 2 is 2.5 mm-10 mm.

[0027] The COB light strip of the present invention, the flexible circuit board 1 includes a plurality of circuit board units 61, a cutting line position 62 is provided between two adjacent circuit board units 61, and a connecting conductor 63 capable of electrically connecting the circuit board units 61 is provided on the cutting line position 62, the connecting conductor 63 includes a positive conductor 71 and a negative conductor 72, and its structure is an existing conventional setting, which will not be described in detail here.

[0028] However, when the existing COB light strip is in use, the place where the electronic components are welded is easily in contact with the outside world, especially when used outdoors. Since the lamp housing is not completely waterproof, the welding place is in contact with the humid environment, which is unsafe to use. In order to solve this problem, a flexible adhesive layer is wrapped around the flexible circuit board 1, and the flexible adhesive layer is a silicone layer, so that the COB light strip can play a waterproof role, and the place where the electronic components are welded does not contact with the outside world, which is safe to use.

[0029] Furthermore, the thickness of the flexible circuit board 1 is 1 mm-2 mm.

[0030] In the COB light strip of the present invention, the flexible circuit board 1 comprises a first PEI film material layer 10, a first rolled copper foil 11, a PET film material layer 12, a second rolled copper foil 13 and a second PET film material layer 14 which are sequentially arranged from top to bottom.

[0031] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A flicker-free COB light strip, comprising a flexible circuit board (1) and an LED chip (2) arranged on the flexible circuit board (1), characterized in that: A rectifier bridge (3), a resistor 1 (4), a capacitor (5), a constant current IC (6) and a resistor 2 (7) are also arranged on the flexible circuit board (1); the front end of the LED chip (2) is conductively connected to the resistor 1 (4) and the rectifier bridge (3) in sequence, and the rear end of the LED chip (2) is conductively connected to the capacitor (5), the constant current IC (6) and the resistor 2 (7) in sequence.

2. The flicker-free COB light strip according to claim 1, characterized in that: Two capacitors (5) may be arranged in parallel.

3. The flicker-free COB light strip according to claim 1, characterized in that: A plurality of LED chips (2) are evenly spaced and arranged at intervals.

4. The flicker-free COB light strip according to claim 3, characterized in that: Fluorescent silica gel (41) is sprayed onto the LED chip (2).

5. The flicker-free COB light strip according to claim 3, characterized in that: The distance between two adjacent LED chips (2) is 2.5 mm to 10 mm.

6. A flicker-free COB light strip according to any one of claims 1 to 5, characterized in that: The flexible circuit board (1) comprises a plurality of circuit board units (61), a cutting line position (62) is arranged between two adjacent circuit board units (61), and a connecting conductor (63) capable of electrically connecting the circuit board units (61) is arranged on the cutting line position (62).

7. The flicker-free COB light strip according to claim 6, characterized in that: The connecting conductor (63) includes a positive electrode conductor (71) and a negative electrode conductor (72).

8. The flicker-free COB light strip according to claim 1, characterized in that: The flexible circuit board (1) is wrapped with a flexible adhesive layer, and the flexible adhesive layer is a silicone layer.

9. The flicker-free COB light strip according to claim 1, characterized in that: The thickness of the flexible circuit board (1) is 1 mm-2 mm.

10. The flicker-free COB light strip according to claim 1, characterized in that: The flexible circuit board (1) comprises a first PEI film material layer (10), a first rolled copper foil (11), a PET film material layer (12), a second rolled copper foil (13) and a second PET film material layer (14) which are arranged in sequence from top to bottom.

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